👀 Views: 43 💬 Answers: 1 📅 Created: 2025-07-11

swiftui observableobject ui swift

I'm refactoring my project and Hey everyone, I'm running into an issue that's driving me crazy. I'm working with an scenario with my SwiftUI app where a view is not updating when the underlying array changes. I'm using an `ObservableObject` to manage my data, and I expect the view to re-render when the array is modified. Here's a simplified version of my code: ```swift import SwiftUI import Combine class DataModel: ObservableObject { @Published var items: [String] = [] func addItem(_ item: String) { items.append(item) } } struct ContentView: View { @ObservedObject var dataModel = DataModel() var body: some View { VStack { List(dataModel.items, id: \.​self) { item in Text(item) } Button("Add Item") { dataModel.addItem("Item \(dataModel.items.count + 1)") } } } } ``` When I tap the "Add Item" button, I can see that the item is added to the `items` array (I even printed it to the console), but the List does not update to reflect the new items. I've tried using `@StateObject` instead of `@ObservedObject` when initializing `dataModel`, but that didn't resolve the scenario. I'm testing this on an iPhone 13 Pro running iOS 15.0. Interestingly, if I directly modify the `items` array in the `DataModel` class and call `objectWillChange.send()`, the List updates correctly. However, this feels like a workaround rather than a solution. Is there something I'm missing in terms of best practices, or is there a known bug with SwiftUI that affects array updates? For context: I'm using Swift on Windows. Any help would be greatly appreciated! Has anyone else encountered this?